fromJson static method

TaskSchema? fromJson(dynamic value)

Returns a new TaskSchema instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static TaskSchema? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      assert(json.containsKey(r'code'),
          'Required key "TaskSchema[code]" is missing from JSON.');
      assert(json[r'code'] != null,
          'Required key "TaskSchema[code]" has a null value in JSON.');
      assert(json.containsKey(r'type'),
          'Required key "TaskSchema[type]" is missing from JSON.');
      assert(json[r'type'] != null,
          'Required key "TaskSchema[type]" has a null value in JSON.');
      assert(json.containsKey(r'total'),
          'Required key "TaskSchema[total]" is missing from JSON.');
      assert(json[r'total'] != null,
          'Required key "TaskSchema[total]" has a null value in JSON.');
      assert(json.containsKey(r'rewards'),
          'Required key "TaskSchema[rewards]" is missing from JSON.');
      assert(json[r'rewards'] != null,
          'Required key "TaskSchema[rewards]" has a null value in JSON.');
      return true;
    }());

    return TaskSchema(
      code: mapValueOfType<String>(json, r'code')!,
      type: TaskType.fromJson(json[r'type'])!,
      total: mapValueOfType<int>(json, r'total')!,
      rewards: RewardsSchema.fromJson(json[r'rewards'])!,
    );
  }
  return null;
}